Skip-hoist and tram-car equipment



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927 A. WARNER I SKIP HOIST AND TRAM CAR EQUIPMENT Filed Aug. lo, 192e Patented June 2l, 1927.

UNrrEn srArris PATENT OFFICE.

ARTHUR WARNER, OF fI-IAVEREORD, PENNSYLVANIA, ASSIGNORVTO R. H. BEAUMONT COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANIA.

Application led August 10, 1926.

length not directly restricted byA the skip,

hoist travel and also to permit the period of stop (waiting time) at the loading point to be varied as desired without aiecting the skip hoist travel; and second, to provide simple7 reliable and eiicient means by which the foregoing objects are accomplished.

Generally stated, the invent-ion comprises a single drum skip hoist equipment and tram car structure having means for providing ar difference between car and bucket movement, which means include load and limit stops for the car, means for returning the car to its load stop, a bucket cable and a car cable wound in opposite directions on the same drum and played out and hauled in thereby sufficiently to cause the bucket to complete its up and down movements and sufficiently to provide slack in the car cable at each limit stop of the car, and two counterweights arranged in the reach of the car cable and of which one is free and of which the other is provided with a seat to apportion the cable slack between them.

The invention also comprises the improvements t0 be presently described and iinally claimed.

In the following description reference will be made to the accompanying drawing forming part hereof and in which the single figure more or less diagrammatically illustrates a struct-ure embodying features of the invention.

In the drawing l is a single drum skip winding machine With skip bucket 2 raised by cable 3, wound around the drum of the winding machine l in one direction, and 4 is a cable wound around the same drum in the opposite direction so that as cable 3 is wound on the drum, cable 4 lplays off the drum and vice versa. Vhen cable 4 is Wound on the drum it raises slack counterweight 5 until it is fully up, and then pulls tram car 6 to the right until it strikes bumper or limit stop 7, which stops the car, and then cable 4 lifts the counterweight 8 until the skip bucket 2 has reached the bot- SKIP-HOIST AND 'PRAM-CAR EQUIPMENT.

Serial No. 128,360.

tom of its travel, then the machine l stops and reverses the direction of its rotation and raises the bucket 2 with its load at the same time playing out cable 4. The counter'- weight 9 pulls the empty tram car 6 back along its track unt-il itv strikes bumper or limit stop l0, which stops the car under its loading point. The winding machine l continues to run raising bucket 2 until it is all the way up and dumped. The slack in cable 4 1s taken up by the counterweight 5 as the heavy counterweight 8 has seated on the shelf l1l before the tram car started back after dumping. l2 is a movable or adjustable dumper and it is used to dump the tram car at any desired point along its course.

Obviously the tram car length of travel is not directly restricted by the skip hoist travel and the period of stop of the car at the loading point can be varied as desired without affecting the skip hoist travel. These results are accomplished by a proper selection of length of travel and ofcounterweights and locations of the bumpers.

It will be obvious to those skilled in the art to which theinvention relates that modifications may be made in details of construction and arrangements and matters of incre form without departing from the spirit of the invention which is not limited to such matters or otherwisetha-n the prior art and the appended claim may require.

I claim: y

In a skip hoist equipment and tram car structure means for providing a difference between car and bucket movements, including load and limit stops for the car, means for returning the car to its load stop, a bucket cable and a car cable played out and hauled in suiiiciently to cause the bucket to complete its up and down movements and suiiiciently to provide slack in the car cable at each limit stop of the car, and two counterweights arranged in the reach of the car cable and of which one is free and of which the other is provided with a seat to apportion the cable slack between them.

ARTHUR WARNER. 

